Professor Emeritus,Others,Professor
- 2001 - 2002 Nagano Women's Junior College
- 2001 - 2002 Nagano Women'sJunior College, Visiting Professor
- 1997 - 2001 Nagano Women's Junior College
- 1997 - 2001 Nagano Women'sJunior College, Professor
- 1974 - 1996 Shinshu University School of Medicine
- 1974 - 1996 Shinshu University School of Medicine, Professor
- 1996 - - 信州大学 名誉教授
- 1996 - - Shinshu University, Professor Emeritus
- 1990 - 1992 信州大学医学部長
- 1990 - 1992 Shinshu University School of Medicine, Dean
- 1960 - 1973 Shinshu University School of Medicine
- 1960 - 1973 Shinshu University School of Medicine,
- 1962 - 1964 イリノイ大学生命科学部 リサーチアソシエート
- 1962 - 1964 University of Illinois School of Life Sciences,
- 1959 - 1960 Shinshu University School of Medicine
- 1959 - 1960 Shinshu University School of Medicine,
- Research Associate
- Associate Professor
- Assistant Professor
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- 2000 - 2004 Microscopy Society of Singapore International Advisory Board
- 2004 - 16th Congress of International Federation of Association of Anatomists International Advisory Bonrd, Organizer
- 2003 - 5th International Malpighi Symposium Delegate
- 2002 - 15th International Congress on Electron Microscopy Organizer
- 1974 - 2000 日本臨床電子顕微鏡学会 理事,副会長,会長,評議員,名誉会員
- 2000 - Asia-Pacific International Congress on Electron Microscopy International Advisory Board
- 1999 - 15th Congress of International Federation of Association of Anatomists International Advisory Board
- 1994 - 1997 5th International Symposium on Radioautography Honarary President(名誉会長)
- 1992 - 1996 日本組織細胞化学会 名誉会員,理事,会長,評議員,名誉会員
- 1991 - 1996 World Society of Cellular and Molecular Biology Vice-President(副会長),President(会長),Honarary President(名誉会長)
- 1988 - 1994 日本解剖学会 理事,評議員,名誉会員
- 1994 - 4th US-Japan Joint Congress of Histochemistry and Cytochemistry President(会長)
- 1993 - 4th International Symposium on Radioautography President(会長)
- 1990 - 1991 長野県医学会 会頭
- 1990 - 1991 信州医学会 会頭
- 1980 - 1983 日本電子顕微鏡学会 理事,評議員,功労会員
- 1974 - 日本組織培養学会 会長,名誉会員
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16th Congress of International Federation of Association of Anatomists
, Microscopy Society of Singapore
, Asia-Pacific International Congress on Electron Microscopy
, 15th Congress of International Federation of Association of Anatomists
, 5th International Symposium on Radioautography
, 4th International Symposium on Radioautography
, 4th US-Japan Joint Congress of Histochemistry and Cytochemistry
, World Society of Cellular and Molecular Biology
, 長野県医学会
, 信州医学会
, 日本組織培養学会
, 日本電子顕微鏡学会
, 日本組織細胞化学会
, 日本臨床電子顕微鏡学会
, 日本解剖学会
, 5th International Malpighi Symposium
, 15th International Congress on Electron Microscopy